Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method, comprising: receiving a plurality of voxel values corresponding to respective locations in a heart, which are acquired using magnetic resonance imaging (MRI); identifying voxel values that, in spite of (i) corresponding to a same location in the heart and (ii) being gated to a same phase of an electrocardiogram (ECG) cycle of the heart, differ by more than a predefined difference; and reconstructing an image of at least a portion of the heart from the plurality of voxel values excluding at least the identified voxel values, wherein identifying the voxel values that differ by more than the predefined difference comprises: constructing a scatter plot comprising multiple data points in a plane whose first and second axes denote voxel values acquired in respective first and second MRI acquisitions, wherein each data point represents the voxel values at a given location in the heart in the first and second MRI acquisitions; and identifying one or more data points that fall outside a predefined region in the plane.
A method for improving MRI heart imaging involves several steps. First, it receives multiple MRI voxel values corresponding to specific locations within a heart. Next, it identifies inconsistent voxel values. This identification specifically involves constructing a scatter plot where the first and second axes represent voxel values acquired in respective first and second MRI acquisitions for the same heart location. Each data point on the plot represents the voxel values for a given location in these two acquisitions. Voxel values are considered inconsistent if they correspond to the same heart location and the same ECG cycle phase but differ by more than a predefined amount, which are identified as data points falling outside a predefined region on the scatter plot. Finally, an image of at least a portion of the heart is reconstructed using the received voxel values, but *excluding* all the identified inconsistent voxel values, thereby filtering out unreliable data.
2. The method according to claim 1 , wherein reconstructing the image comprises skipping reconstruction of any image that comprises an acquisition taken during an identified arrhythmia.
A method for improving MRI heart imaging involves several steps. First, it receives multiple MRI voxel values corresponding to specific locations within a heart. Next, it identifies inconsistent voxel values. This identification specifically involves constructing a scatter plot where the first and second axes represent voxel values acquired in respective first and second MRI acquisitions for the same heart location. Each data point on the plot represents the voxel values for a given location in these two acquisitions. Voxel values are considered inconsistent if they correspond to the same heart location and the same ECG cycle phase but differ by more than a predefined amount, which are identified as data points falling outside a predefined region on the scatter plot. Finally, an image of at least a portion of the heart is reconstructed using the received voxel values, but *excluding* all the identified inconsistent voxel values, thereby filtering out unreliable data. A specific aspect of this reconstruction is to *skip* the reconstruction of any image that includes data acquired during an identified cardiac arrhythmia.
3. The method according to claim 1 , and comprising, in response to excluding the voxel values, adjusting a thickness of the reconstructed image.
A method for improving MRI heart imaging involves several steps. First, it receives multiple MRI voxel values corresponding to specific locations within a heart. Next, it identifies inconsistent voxel values. This identification specifically involves constructing a scatter plot where the first and second axes represent voxel values acquired in respective first and second MRI acquisitions for the same heart location. Each data point on the plot represents the voxel values for a given location in these two acquisitions. Voxel values are considered inconsistent if they correspond to the same heart location and the same ECG cycle phase but differ by more than a predefined amount, which are identified as data points falling outside a predefined region on the scatter plot. Finally, an image of at least a portion of the heart is reconstructed using the received voxel values, but *excluding* all the identified inconsistent voxel values, thereby filtering out unreliable data. Furthermore, in response to excluding these inconsistent voxel values, the method *adjusts the thickness* of the reconstructed image.
4. The method according to claim 1 , and comprising, in response to excluding the voxel values, adjusting a reconstruction filter used for reconstructing the image.
A method for improving MRI heart imaging involves several steps. First, it receives multiple MRI voxel values corresponding to specific locations within a heart. Next, it identifies inconsistent voxel values. This identification specifically involves constructing a scatter plot where the first and second axes represent voxel values acquired in respective first and second MRI acquisitions for the same heart location. Each data point on the plot represents the voxel values for a given location in these two acquisitions. Voxel values are considered inconsistent if they correspond to the same heart location and the same ECG cycle phase but differ by more than a predefined amount, which are identified as data points falling outside a predefined region on the scatter plot. Finally, an image of at least a portion of the heart is reconstructed using the received voxel values, but *excluding* all the identified inconsistent voxel values, thereby filtering out unreliable data. Additionally, in response to excluding these inconsistent voxel values, the method *adjusts a reconstruction filter* used for creating the image.
5. A system, comprising: a memory, which is configured to store a plurality of voxel values corresponding to respective locations in a heart, which are acquired using magnetic resonance imaging (MRI); and a processor, which is configured to: identify voxel values that, in spite of (i) corresponding to a same location in the heart and (ii) being gated to a same phase of an electrocardiogram (ECG) cycle of the heart, differ by more than a predefined difference; and reconstruct an image of at least a portion of the heart from the plurality of voxel values excluding at least the identified voxel values, wherein the processor is configured to identify the voxel values that differ by more than the predefined difference by: constructing a scatter plot comprising multiple data points in a plane whose first and second axes denote voxel values acquired in respective first and second MRI acquisitions, wherein each data point represents the voxel values at a given location in the heart in the first and second MRI acquisitions; and identifying one or more data points that fall outside a predefined region in the plane.
A system for improving MRI heart imaging includes a memory configured to store MRI voxel values for heart locations, and a processor. The processor identifies inconsistent voxel values: those from the *same heart location* and *same ECG phase* that differ by more than a predefined amount. This identification involves constructing a scatter plot where the first and second axes denote voxel values acquired in respective first and second MRI acquisitions for the same location, with each data point representing these paired values. Inconsistent values are identified as data points falling outside a predefined region on this plot. Subsequently, the processor reconstructs an image of at least a portion of the heart using the voxel values, *excluding* the identified inconsistent values, thereby filtering out unreliable data.
6. The system according to claim 5 , wherein the processor is configured to reconstruct the image by skipping reconstruction of any image that comprises an acquisition taken during an identified arrhythmia.
A system for improving MRI heart imaging includes a memory configured to store MRI voxel values for heart locations, and a processor. The processor identifies inconsistent voxel values: those from the *same heart location* and *same ECG phase* that differ by more than a predefined amount. This identification involves constructing a scatter plot where the first and second axes denote voxel values acquired in respective first and second MRI acquisitions for the same location, with each data point representing these paired values. Inconsistent values are identified as data points falling outside a predefined region on this plot. Subsequently, the processor reconstructs an image of at least a portion of the heart using the voxel values, *excluding* the identified inconsistent values, thereby filtering out unreliable data. Furthermore, the processor is specifically configured to perform this image reconstruction by *skipping* the reconstruction of any image that includes data acquired during an identified cardiac arrhythmia.
7. The system according to claim 5 , wherein the processor is further configured to, in response to excluding the voxel values, adjust a thickness of the reconstructed image.
A system for improving MRI heart imaging includes a memory configured to store MRI voxel values for heart locations, and a processor. The processor identifies inconsistent voxel values: those from the *same heart location* and *same ECG phase* that differ by more than a predefined amount. This identification involves constructing a scatter plot where the first and second axes denote voxel values acquired in respective first and second MRI acquisitions for the same location, with each data point representing these paired values. Inconsistent values are identified as data points falling outside a predefined region on this plot. Subsequently, the processor reconstructs an image of at least a portion of the heart using the voxel values, *excluding* the identified inconsistent values, thereby filtering out unreliable data. Additionally, in response to excluding these inconsistent voxel values, the processor is configured to *adjust the thickness* of the reconstructed image.
8. The system according to claim 5 , wherein the processor is further configured to, in response to excluding the voxel values, adjust a reconstruction filter used for reconstructing the image.
A system for improving MRI heart imaging includes a memory configured to store MRI voxel values for heart locations, and a processor. The processor identifies inconsistent voxel values: those from the *same heart location* and *same ECG phase* that differ by more than a predefined amount. This identification involves constructing a scatter plot where the first and second axes denote voxel values acquired in respective first and second MRI acquisitions for the same location, with each data point representing these paired values. Inconsistent values are identified as data points falling outside a predefined region on this plot. Subsequently, the processor reconstructs an image of at least a portion of the heart using the voxel values, *excluding* the identified inconsistent values, thereby filtering out unreliable data. Moreover, in response to excluding these inconsistent voxel values, the processor is configured to *adjust a reconstruction filter* used for creating the image.
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July 28, 2020
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